. Official proceedings . —r •^=t~-- 19 21 25 Years Figure 11 will have a repair cost less than the trend, due to improveddesign and material. Therefore, savings in repairs of new overold locomotives will be understated to the extent that the main-tenance costs of the new locomotives fall under the trend costmade by the older power. Selection of Power. In general the selection of power should be that which willmake the greatest return to the property for each dollar of 3:) THE. BALDWIN LOCOMOTIVE. WORKS ~ COMBINED REPAIR COST TREND orSWnWIMS R0AD5 ^ bASCO v4 METHOD or LEAST 3QU>RE3 •» *CTU*l
. Official proceedings . —r •^=t~-- 19 21 25 Years Figure 11 will have a repair cost less than the trend, due to improveddesign and material. Therefore, savings in repairs of new overold locomotives will be understated to the extent that the main-tenance costs of the new locomotives fall under the trend costmade by the older power. Selection of Power. In general the selection of power should be that which willmake the greatest return to the property for each dollar of 3:) THE. BALDWIN LOCOMOTIVE. WORKS ~ COMBINED REPAIR COST TREND orSWnWIMS R0AD5 ^ bASCO v4 METHOD or LEAST 3QU>RE3 •» *CTU*l. TOINT5 r«oM 5To3TYfeAii INcuflivc [J. Figure 12 expenditure, all factors taken into consideration. Increasedspeed of a given service, due to smaller trains or larger loco-motives, adversely affects the direct economy of any substitu-tion. It is possible in given cases that the cost of increase inspeed per se may more than oftset the favorable factors, result-ing in an actual increase in direct operating expense. lUit inthese cases the management must give careful consideration tothe fact that the increase in speed of operation reduces theamount of locomotive and car equi])ment required for the traf-fic. The above jjoint, together with the commercial advantageof greater traffic received by virtue of increased speed, mustbe balanced against its cost. Each case of possible substitutions of modern power is anexample in itself and requires detailed study and we cannot laydown rules that will cover all of them without modification. 56
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